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IMPORTANT SAFETY WARNING
Never install antennas or transmission lines over or near power lines. You can be seriously
injured or killed if any part of the antenna, support or transmission line touches a power
line. Always follow this antenna safety rule: the distance to the nearest power line should
be at least twice the length of the longest antenna, transmission line or support dimension.
GETTING TO KNOW YOUR Z-817
Your Z-817 is a quality, precision instrument that will give you many years of outstanding
service; take a few minutes to get to know it.
The Z-817 is designed especially for use with the FT-817. Tuning is performed when the Tune
button is pushed on the front of the Z-817 and held for one second. The tuner can be placed in
bypass mode by pressing the Tune button momentarily.
The Z-817 is powered directly from internal AA batteries; no separate power supply is needed.
The Z-817 automatically powers up at the start of a tuning cycle, and goes into an ultra low-power
sleep mode when tuning is complete. The latching relays hold the tuned configuration indefinitely,
even when DC power is completely removed. Tuning memories are stored in FLASH memory. The
internal batteries should last for approximately one year under normal operating circumstances;
longer or shorter depending upon how frequently tuning is performed.
The Z-817 has 2,000
2
frequency memories. When tuning on or near a previously tuned
frequency, the Z-817 uses “Memory Tune” to recall the previous tuning parameters in a fraction of a
second. If no memorized settings are available, the tuner runs a full tuning cycle, storing the
parameters for memory recall on subsequent tuning cycles on that frequency. In this manner, the Z-
817 “learns” as it is used, adapting to the bands and frequencies as it goes.
When used with a radio other than the FT-817, the supplied CAT interface cable is not
connected. Instead, the radio must be manually keyed during tuning. Also, only 200 memories are
available when used with a radio other than the FT-817.
The Z-817 is designed to tune with a maximum of 20 watts of forward power. Many “QRP”
radios are capable of transmitting more than the traditional 5 watts maximum for QRP; the Z-817
works well with these radios, such as the FT-897 operating in battery-only mode (20 watts).
2
200 memories when not used with an FT-817 radio.
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